Engine Controls System: 151001

151001 - P050B

Information saved in
DME

Fault code
151001 - P050B

Fault text
Ignition timing adjustment in idle, cold start Ignition timing
too early

Fault description
The diagnostic function monitors the ignition angle while
the catalytic converter is being heated.

Condition for fault identification
Test condition:
The fault is recognized when the ignition-angle adjustment
is outside the tolerance range.
Potential problem source(s):
- Poor fuel quality
Terminal condition: none
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- 5 sec. after engine on
Other conditions:
- Engine on and running at idle
- Catalyst heating (always takes place for at least 45 sec.
following engine start)

Condition for fault memory entry
The diagnostic fault code is logged when the fault remains
present for longer than 2 min.

Action in service
- Replace fuel

Fault effect and breakdown warning
Breakdown notice:
- none
Possible apparent symptoms:
- none

Driver information
Warning light:
- ECE emissions warning lamp: on
- ECE electronic engine power reduction: on
- CC message: on
- US emissions warning lamp: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
- none